/*
 * Copyright (c) 2011, Nikolaus Moll
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 * * Redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution.
 * * Neither the name of the gradecalculator.net nor the
 * names of its contributors may be used to endorse or promote products
 * derived from this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
 * DAMAGE.
 */
package net.gradecalculator.core.descriptors;

import net.gradecalculator.core.interfaces.ICourseOfStudiesIdentifier;
import net.gradecalculator.core.interfaces.IUniversity;

public class CourseOfStudiesIdentifier implements ICourseOfStudiesIdentifier {
	private IUniversity university = null;
	private String degree = "";
	private String courseOfStudies = "";
	private String versionOfRegulations = "";

	@Override
	public IUniversity getUniversity() {
		return university;
	}

	@Override
	public void setUniversity(final IUniversity university) {
		this.university = university;
	}

	@Override
	public String getDegree() {
		return degree;
	}

	@Override
	public void setDegree(final String degree) {
		this.degree = degree;
	}

	@Override
	public String getCourseOfStudies() {
		return courseOfStudies;
	}

	@Override
	public void setCourseOfStudies(final String courseOfStudies) {
		this.courseOfStudies = courseOfStudies;
	}

	@Override
	public String getVersionOfRegulations() {
		return versionOfRegulations;
	}

	@Override
	public void setVersionOfRegulations(final String semester) {
		this.versionOfRegulations = semester;
	}

	@Override
	public String toString() {
		return university + "." + degree + "." + courseOfStudies + "." + versionOfRegulations;
	}

	@Override
	public boolean equals(final Object o) {
		if (o == this) {
			return true;
		}
		if (!(o instanceof CourseOfStudiesIdentifier)) {
			return false;
		}

		final CourseOfStudiesIdentifier dsc = (CourseOfStudiesIdentifier) o;
		return (dsc.courseOfStudies.equals(courseOfStudies))
			&& (dsc.degree.equals(degree))
			&& (dsc.versionOfRegulations.equals(versionOfRegulations))
			&& (dsc.university.equals(university));
	}

	@Override
	public int hashCode() {
		int result = 17;
		result = 31 * result + university.hashCode();
		result = 31 * result + degree.hashCode();
		result = 31 * result + courseOfStudies.hashCode();
		result = 31 * result + versionOfRegulations.hashCode();

		return result;
	}

}
